Safety-razor.



L. H. COBB.

SAFETY RAZOR APPLICATION FILED SEPT. 24, 1906.

Patented July 4, 1911.

2 SHEETS-SHEET 1.

lnuerfior Lgman H. Cams.

Wdnesses .L. H. COBB.

SAFETY RAZOR.

APPLICATION FILED SEPT. 24, 1906.

Patented. July 4, 1911.

2 SHEETS-SHEET 2.

Invenior Lyman H. Babb W111 messes v UNrrED STATES PATENT OFFICE.

LYMAN H. COBB, 0F FITCHBURG, MASSACHUSETTS, ASSIGNOR T0 MARY ELIZABETHJ'OHN SON, TRUSTEE, 0F FITCHBURG, MASSACHUSETT SAFETYFRAZOR.

To all whom it may concern:

Be it knownthat I, LYMAN H. COBB, a citizen of the. United States,residing at Fitchburg, in the county of \Voroester and Commonwealth ofMassachusetts, have invented a new and useful Improvement inSafetyltazors, of which the following is a specification, accompanied bydrawings forming a part of the same, in which Figure 1 represents inperspective View a safety razor embodying my invention. Fig. 2 is a sideview of the head of the razor. Fig. 3 is a central transverse sectionalview of the head of the razor. Fig. 4 is a top view. Fig. a top viewwith the upper clamping plate removed. Fig. 6 is a central longitudinalsectional view through the head of the razor. Fig. 7 IS an enlarged topview of one of the guard teeth. Fig. 8 IS a side view of the same. Fig.9 is a sectional view' on the line 9 9,- Fig.' 7. Figs. 10 and. 11 showthe head of the razor rotated on the handle with its longitudinal axisat an oblique angle to the handle. Fig. 12 shows the head of the razorrotated into a position opposite that shown in Fig. 1.

Similar reference letters and fingers refer to similar parts in thedifferent views.

My present. invention relates to certain improvements in that class ofrazors known as safety razors in which a cutting blade is securelyclamped between clamping plates contained in the head of the razor, andthe edge of the cutting blade is protected by the guard teeth, and myinvention consists in the construction and arrangement of the parts ashereinafter described and pointed out in the annexed claims. 8

Referring to the accompanying drawings, 1 denotes the handle, and 2 thehead of my improved safety razor, said head comprising clamping plates 3and 4 between which is clamped a cutting blade The clamping plate 4 isprovided on one edge With a series of teeth 6, over the curved uppersurface of which the cutting edge 7 of the blade 5 slightly projects inthe usual manner in instruments of this class. The clamping plate 4 isattached to the end of the handle 1 by means of a screw 8 and a circularwasher 9. The end of the handle 1 is cut away on diametrically oppositesides as shown atv 10, Fig. 6, and enters a correspondingly shapedholein the washer 9, in order Specification of Letters Patent.

Application filed September 24, 1906.

Patented Juy 4, 1911.

Serial No. 335,867 E to prevent the washer 9 from turning on the end ofthe handle.

Journaled on the handle 1, between the plate 1 and an annular shoulder11 of the handle, is a rotatable screw threaded sleeve 12, having aknurled flange 13 by which the sleeve may be turned by the operator. Thescrew threaded sleeve 12 enters a screw threaded hole 11 in the flange15 which is a thereby releasing the "cutting blade 5, and

by lowering the flange 15 of plate 3 the cutting blade 5 is securelyclamped between the two plates. v Lugs 18 at opposite ends of the plate3 and integral therewith, are turned downwardly and engage correspondingnotches 19 in the bpposite ends of the plate 1. The lugs. 18, 18 serveto guide the movements of the plates as they approach and recede fromeach other and also act as stops to limit the longitudinal movement ofthe cutting blade 5 as it clamped between the plates 3 and 4. The flange15 and plates 3 and 4 are free to rotate 011 the end of the handle whilethe washer '9 is held from rotating by the handle, and the washer is'provided with equi-distant notches 20, preferably four in number, andthesenotches are successively engaged by the bent section '21 of theblade spring 22 attached by screws 23 to the real-edge of the plate 3.The notches 20 are so arranged on the periphery of the washer 9 thatwhen they are engaged by the blade spring 22 the head would bemaintained on the end of the'handle in either one of the four positionsas shown in Figs. 1, 10, 11 and 12, as maybe most desirable for theapplication of the cutting blade to the face. If desired, the number ofnotches in the periphery of the washer 9 may be increased, and thenumber of positions in which the cutting blade may be held relatively tothe handle correspondingly multiplied.

The guard teeth 6 which project from one broad to provide suitablebearing surfaces 25 to rest against theskin and in order to prevent thebeard from being pressed down out of the way of the cutting edge oftheblade by the width of the teeth, I cut away portions of the teeth onopposite sides as at 26, 26 in order to reduce the width of the bearingsurfaceof the teeth at point 27 or dire'ctly in front of the .cuttingedge of the blade, thereby enabling the beard which may have beenpressed down by the broad tip of the teeth to rise and be suitablypresented to the cutting edge of the blade.

Figs. 1, 10, 11 and 12 represent four different positions of the head ofthe razor relatively to the handle, in which position the head is lockedby the engagement of the blade spring 22 with one of the notches 20 inthe circular disk 9. These changesin position greatly facilitatemanipulation when the razor is changed from one hand to the other, orfrom one side of the face to the other, or when the razor is held by oneperson in the operation of shaving another.- While the stilfness of theblade spring 22.is suflicient to securely hold the head of the razor inany desired position, it allows the immediate and rapid change of thehead from one position to another, as may be desired in the operation ofshaving.

I claim,

1. In a safety razor, a clamping plate bent upon itself to'form a flangeparallel with said plate and having a screw threaded opening, a handlepassing through said flange and provided with a shoulder, asecondclamping plate attached to the end of said handle, and a screw threadedrotatable sleeve journaled on said handle and held from longitudinalmovement between said second clamping plate and said shoulder,

threaded opening in said flange.

2. In a safety razor, the combination with a handle and a pair ofclamping plates for holding a razor blade held in parallel planes at theend of the handle, and arotatable screw threaded sleeve journaled on theend of said handle and held from longitudinal movement and operativelyconnected with one of said clamping plates, whereby it is moved towardor away from the other clampingplate by the rotation of said sleeve.

3. In a safety razor, the combination with a handle and a clamping plateattached to one end of said handle, of a second movable clamping plateoutside said attached clamping plate, and having a flange extendingaround. one edge of said attached clamping plate and embracing saidhandle, and a screw threaded sleeve engaging said flange and rotatableon said handle, whereby said movable clamping plate is drawn toward saidattached clamping plates.

4. In a safety razor, the combination with a'handle, of a circularwasher non-rotatably attached to the end of said handle, and providedwith a series of peripheral notches, a head comprising means for holdinga razor blade and rotatable about the end of said handle, and meanscarried by said head for engaging the notches in said washer.

5. In a safety razor, the combination with a handle and a rotatable headfor holding a razor blade, of a washer non-rotatably held on the end ofsaid handle, and a blade spring carried by said head .and engaging saidwasher, whereby said head is locked in position. Dated-this nineteenthday of September 1906.

LYMAN H. COBB.

lVitnesses C. A. BATCHELDER, BLANCHE L. SMITH.

with its screw threads engaging the screw

